Cannot create LSTM network in brain.js

After installing brainjs on an Apple Mac using the Terminal command:
```
npm install brainjs
```

I find the following attempt in node.js to create an LSTM network results in an error:
```
const brain = require('brainjs');

const net = new brain.recurrent.LSTM();
```
The error message shown in Terminal is:
```
const net = new brain.recurrent.LSTM();
^
TypeError: Cannot read properties of undefined (reading 'LSTM')
```
What am I doing wrong here?

I am following code example articles [here](https://dev.to/gfish94/brainjs-for-beginners-1g77) and [here](https://hackernoon.com/build-a-personal-shopping-assistant-using-brainjs-and-nodejs).